El Paso Solar Pond

2001 ◽  
Vol 123 (3) ◽  
pp. 178-178 ◽  
Author(s):  
Huanmin Lu and ◽  
Andrew H. P. Swift

The El Paso Solar Pond, a research, development, and demonstration project operated by the University of Texas at El Paso, is a salinity-gradient solar pond with a surface area of 3,000 m2 and a depth of 3.2 m. The pond utilizes an aqueous solution of predominantly sodium chloride (NaCl). The surface convective zone, main gradient zone, and bottom convective zone are approximately 0.6 m, 1.4 m, and 1.2 m, respectively. The project, located on the property of Bruce Foods, Inc., was initiated in 1983 in cooperation with the U.S. Bureau of Reclamation. Since then, the El Paso Solar Pond has successfully developed a series of technologies for solar pond operation and maintenance, as well as demonstrated several different applications. In 1985, the El Paso Solar Pond became the first in the world to deliver industrial process heat to a commercial manufacturer; in 1986 became the first solar pond electric power generating facility in the United States; and in 1987 became the nation’s first experimental solar pond powered water desalting facility. Currently, the major research at El Paso Solar Pond is focused on desalination and brine management technologies. The long-term goal of this research is to develop a systems approach for desalination/brine management via a multiple process desalination coupled with solar ponds. This systems approach will reuse the brine concentrate rejected from desalting plants thereby negating the need for disposal (zero discharge), and provide additional pollution-free renewable energy for the desalting process.

2004 ◽  
Vol 126 (2) ◽  
pp. 759-767 ◽  
Author(s):  
Huanmin Lu ◽  
Andrew H. P. Swift ◽  
Herbert D. Hein, ◽  
John C. Walton

The El Paso salinity gradient solar pond, initiated in 1983, has been in operation since 1985. Through 16 years of research and operation, the El Paso Solar Pond has successfully demonstrated applications including desalination, waste brine management, industrial process heat production, and electricity generation; and has developed and implemented key technical advancements to improve the technical viability and economic feasibility of salinity gradient solar ponds, including: 1) an automated instrumentation monitoring system, 2) a stability analysis strategy and high temperature (60–90°C) gradient maintenance methods, 3) a scanning injection technique for improved salinity gradient construction and maintenance, 4) new liner technology, and 5) an improved heat extraction system.


2013 ◽  
Vol 55 (Supl.4) ◽  
pp. 447
Author(s):  
Xóchitl Castañeda

On behalf of the editorial committee of this special edition of the Migration and Health Research Program (Programa de Investigación en Migración y Salud or PIMSA, for its Spanish acronym), the Mexico´s Ministry of Health (SSa), the National Council of Science and Technology of Mexico (Conacyt), the Health Initiative of the Americas (HIA) at the School of Public Health of the University of California at Berkeley, and The University of Texas at El Paso, we are pleased to introduce this special publication on migration and health between Mexico and the United States...


2017 ◽  
Vol 139 (4) ◽  
Author(s):  
A. A. Abdullah ◽  
K. A. Lindsay

The quality of the stability of the nonconvective zone of a salinity-gradient solar pond (SGSP) is investigated for an operating protocol in which the flushing procedure exactly compensates for evaporation losses from the solar pond and its associated evaporation pond. The mathematical model of the pond uses simplified, but accurate, constitutive expressions for the physical properties of aqueous sodium chloride. Also, realistic boundary conditions are used for the behaviors of the upper and lower convective zones (LCZs). The performance of a salinity-gradient solar pond is investigated in the context of the weather conditions at Makkah, Saudi Arabia, for several thickness of upper convective zone (UCZ) and operating temperature of the storage zone. Spectral collocation based on Chebyshev polynomials is used to assess the quality of the stability of the pond throughout the year in terms of the time scale for the restoration of disturbances in temperature, salinity, and fluid velocity underlying the critical eigenstate. The critical eigenvalue is found to be real and negative at all times of year indicating that the steady-state configuration of the pond is always stable, and suggesting that stationary instability would be the anticipated mechanism of instability. Annual profiles of surface temperature, salinity, and heat extraction are constructed for various combinations for the thickness of the upper convective zone and storage zone temperature.


Author(s):  
Sharon Leon

Between 1942 and 1964 millions of Mexicans came to the United States as guest workers, authorized by a set of bilateral agreements. Beginning in late 2005, a coalition of academic scholars and public historians from Brown University’s Center for the Study of Race and Ethnicity in America, the Institute of Oral History at the University of Texas at El Paso (UTEP), the Smithsonian Institution’s National Museum of American History (NMAH), and the Roy Rosenzweig Center for History and New Media (RRCHNM) at George Mason University came together to launch an effort to gather the stories of those workers. This unprecedented project resulted in the collection of oral histories, documents, and images over the course of five years. It involved not only scholars but also a host of local community groups that enabled the partners to surface previously hidden materials that were unlikely to make it into traditional archival collections. The collection and dissemination process was facilitated by the creation of the Bracero History Archive, an open-access website that allowed the project partners to simultaneously build the collections from widely dispersed locations as they worked to document the lives and experiences of those workers. Between 1942 and 1964 millions of Mexicans came to the United States as guest workers, authorized by a set of bilateral agreements. Beginning in late 2005, a coalition of academic scholars and public historians from Brown University’s Center for the Study of Race and Ethnicity in America, the Institute of Oral History at the University of Texas at El Paso (UTEP), the Smithsonian Institution’s National Museum of American History (NMAH), and the Roy Rosenzweig Center for History and New Media (RRCHNM) at George Mason University came together to launch an effort to gather the stories of those workers. This unprecedented project resulted in the collection of oral histories, documents, and images over the course of five years. It involved not only scholars but also a host of local community groups that enabled the partners to surface previously hidden materials that were unlikely to make it into traditional archival collections. The collection and dissemination process was facilitated by the creation of the Bracero History Archive (http://braceroarchive.org), an open-access website that allowed the project partners to simultaneously build the collections from widely dispersed locations as they worked to document the lives and experiences of those workers. The Bracero History Archive serves as the primary repository for the stories, documents, and artifacts associated with the migrant laborers from Mexico who came to the United States under the auspices of the more than 4.6 million contracts issued during the years of the Mexican Farm Labor Program. As such, it is an important complement to the established scholarship on the program. At the same time, the site serves as a model of how to undertake and complete a distributed collecting project that builds upon important community relationships. This combination of scholarly value and methodological innovation was essential to ensuring the funding from the National Endowment for the Humanities Division of Preservation and Access that made the project possible. In recent years, the project has proven important for contemporary work on the Mexican Farm Labor Program, and it has contributed to enhancing our understanding of migration, citizenship, nationalism, agriculture, labor practices, race relations, gender, sexuality, the family, visual culture, and the Cold War era.


Author(s):  
Ruey Long Cheu ◽  
Carlos Ferregut ◽  
Ladislav Bina ◽  
Helena Novakova ◽  
Tomas Horak ◽  
...  

In August 2010, the University of Texas at El Paso, the Czech Technical University, and the University of Zilina jointly launched the Transatlantic Dual Master's Degree Program in Transportation and Logistics Systems. Under this program, a graduate student spends 1 year of study at the University of Texas at El Paso and a second year at Czech Technical University or University of Zilina, or vice versa. On successful completion of the 2-year program, a student earns two master's degrees. Two years of effort led to a successful proposal submitted to the funding agencies in the United States and the European Union, followed by 1 year of administrative preparation before the actual student mobility began in August 2011. The first cohort of eight students successfully completed the program in June 2012. This paper reports the sequence of events that led to the proposal submission and award, major issues that surfaced throughout the course of the project, and challenges that were overcome during the administrative preparation phase. The experiences of students and professors who have participated in this program are also documented. Key factors leading to the successful implementation in the initial years are discussed.


1992 ◽  
Vol 114 (1) ◽  
pp. 62-69 ◽  
Author(s):  
A. H. P. Swift ◽  
Peter Golding

Since 1986, the 3355 m2 salt gradient solar pond facility in El Paso, Texas, has operated with a temperature difference between the upper and lower zones of 55 to 75° C while delivering industrial process heat, grid-connected electrical power, and thermal energy for the experimental production of desalted water. Because the El Paso solar pond is an inland facility, it is necessary to recycle the salt in a sustainable salt management system. A method that uses the main pond surface for initial brine concentration and short-term storage was developed after it became evident that the original evaporation pond system was undersized. This paper examines the method for brine concentration and storage, the effects of a brine storage zone on pond operation, and the installation of an enhanced evaporation net system and an automatic scanning injection system. A short description of the performance history and current status of the project is also included.


2017 ◽  
Vol 118 ◽  
pp. 226-237 ◽  
Author(s):  
Kamran Manzoor ◽  
Sher Jamal Khan ◽  
Yousuf Jamal ◽  
Muhammad Aamir Shahzad

2013 ◽  
Vol 448-453 ◽  
pp. 1521-1524
Author(s):  
Chun Juan Gao ◽  
Qi Zhang ◽  
Hai Hong Wu ◽  
Liang Wang ◽  
Xi Ping Huang

The solar ponds with a surface of 0.3m2were filled with different concentration salt water and fresh water. The three layer’s structure of solar ponds was formed in the laboratory ponds by using the salinity redistribution. The performance and diffusion of salinity were xperimentally in the solar pond. The measurements were taken and recorded daily at various locations in the salt-gradient solar pond during a period of 30 days of experimentation. The experimental results showed that the salinity gradient layer can sustain a longer time when the lower convective zone is thicker, which is benefit to store solar energy. Therefore, properly increasing the height of LCZ is a good method to enhance the solar pond performance.


2021 ◽  
Vol 43 ◽  
pp. 59-71
Author(s):  
Devendra B. Sadaphale ◽  
S.P. Shekhawat ◽  
Vijay R. Diware

Salt gradient solar ponds are to be designed for thermal efficiency and salinity profile stability. As the salt flux moves upward in the pond, the gradient gets destabilized. This is counteracted by intrusion of salt at different levels as and when required. The density of salt is highest at the bottom and minimum at the top. Hence the destabilization effect is more at top that is at the interface of upper convective zone and non-convective zone (NCZ). In order to keep the interface stable, it is desirable to provide a higher slope of salt gradient near it. However, throughout the non-convective zone, it is not feasible to provide higher slope due to solubility limitations. Hence Husain et al (2012) to divide the NCZ into two parts. The top few centimeters may be given a higher slope and the rest of the zone may be given mild slope as usual. Husain et al (2012) have given analysis for the same and found it to be feasible. However, the experimental feasibility of the same needs to be verified. The present work has done an attempt for the same. In this study, an insulated solar pond with a surface area of 1.40 m2and a depth of 1.14 m is built at the SSBT’s College of Engineering and Technology, Jalgaon in the Maharashtra State (India). The three salty water zones (upper convective, non-convective and heat storage) were formed by filling the pond with salty water of various densities. 6 Thermocouples (type Pt100A) (C+0.2%) were used to measure the temperature profile within the pond. A maximum temperature of 47°C was recorded in the heat storage zone in time span considered for study. The results obtained from experimentation is verified with the concept suggested by Hussain et al (2012) it has been found that they are in a good agreement. The influence of varying the thicknesses of the zones present in a salinity gradient solar pond on the temperatures of the upper convective zone (UCZ) and the lower convective zone (LCZ) is investigated. Also, it is found that by adding the additional non convective zone of 50 mm thickness above the UCZ the heat collection capacity of the LCZ is increased noticeably. The study finds that thickness variation of the zones within the pond is a practical feasibility. The system worked for the entire experimental duration effectively without failure.


2013 ◽  
Vol 805-806 ◽  
pp. 74-77
Author(s):  
Chun Juan Gao ◽  
Qi Zhang ◽  
Liang Wang ◽  
Ying Wang ◽  
Xi Ping Huang

An experimental study on the evolution of the salinity profiles in the salinity gradient solar ponds was executed using a small model pond. The body of the simulated pond is a cylindrical plastic tank, with 50 cm height and 45 cm diameter. The salinity gradient was established in the laboratory tank by using the salinity redistribution technique. The measurements were taken during a period of 20 days of experimentation. This period of time allowed the existence of salt diffusion from the storage zone to the surface. Results obtained from this study show that when the ratio of brine/water is 1/1, the salinity gradient layer can sustain a longer time and the lower convective zone is thicker, which is benefit to store solar energy.


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